Where is it located and how can i gain access to it?

 

It is right above or the oil filter. You will see the wires running to it and
it is round. Should be easy to spot.

 

where is the oil filter?
do i have to go underneath my car to find this?

 

Maybe you should take the car to a mechanic. Just a thought.

 

i tried to save u from a flaming and pm'd u back, just take my advice and jack the car up and slide under and look for it..

 

... idk if we should offer him anymore advice... for his own safety! but here it goes

OP: if you do take this upon yourself.... USE JACK STANDS!
-Remove the under tray ( a few bolts and clips and it drops off )
-Then where the black oil pan is in the middle there will be a cylinder ( maybe white or orange? ) on the passenger side of the engine (thats the oil filter).... right around that area will be a brown sensor with two wires ( as stated above ) sticking out of the place that the oil filter is attached too.... Good luck!!!

Maybe I shoudln't ask this but ( curiosity killed the cat..) why do you need to know wher the sensor is?